//package com.kalvan.web.servlet.request;
//
//import com.kalvan.core.exception.BizException;
//import com.kalvan.web.servlet.annotation.ParamsDecrypted;
//import com.kalvan.web.servlet.interceptor.DecryptInterceptor;
//import lombok.extern.slf4j.Slf4j;
//import org.apache.commons.io.IOUtils;
//import org.springframework.beans.propertyeditors.CustomDateEditor;
//import org.springframework.core.MethodParameter;
//import org.springframework.http.HttpHeaders;
//import org.springframework.http.HttpInputMessage;
//import org.springframework.http.converter.HttpMessageConverter;
//import org.springframework.web.bind.ServletRequestDataBinder;
//import org.springframework.web.bind.annotation.ControllerAdvice;
//import org.springframework.web.bind.annotation.InitBinder;
//import org.springframework.web.bind.annotation.RestController;
//import org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice;
//
//import javax.servlet.http.HttpServletRequest;
//import java.io.IOException;
//import java.io.InputStream;
//import java.lang.reflect.Type;
//import java.text.SimpleDateFormat;
//import java.util.Date;
//import java.util.List;
//
///**
// * 统一请求数据扩展
// *
// * @author chenliang
// */
//@RestController
//@ControllerAdvice
//@Slf4j
//public class RequestHandler implements RequestBodyAdvice {
//    @InitBinder
//    protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws Exception {
//        binder.registerCustomEditor(
//                Date.class,
//                new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"), true));
//        binder.registerCustomEditor(
//                Date.class,
//                new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"), true));
//    }
//
//    @Override
//    public boolean supports(MethodParameter methodParameter, Type type, Class<? extends HttpMessageConverter<?>> aClass) {
//        if (methodParameter.getMethodAnnotation(ParamsDecrypted.class) != null) {
//            return true;
//        }
//        return false;
//    }
//
//    @Override
//    public HttpInputMessage beforeBodyRead(HttpInputMessage httpInputMessage, MethodParameter methodParameter, Type type, Class<? extends HttpMessageConverter<?>> aClass) throws IOException {
//        try {
//            InputStream body = httpInputMessage.getBody();
//            String encryptParams = IOUtils.toString(body, "UTF-8");
//            HttpHeaders httpHeaders = httpInputMessage.getHeaders();
//            List<String> key = httpHeaders.get("key");
//            if (key == null || key.size() == 0) {
//                throw new BizException("解密密钥不存在");
//            }
//            String params = DecryptInterceptor.decryptParam(key.get(0), encryptParams);
//            if (params == null) {
//                log.error("解密失败:  key:{} encryptParams:{}", key.get(0), encryptParams);
//                throw new BizException("解密失败");
//            }
//            /**
//             * 构建新的httpInputMessage
//             */
//            return new HttpInputMessage() {
//                @Override
//                public HttpHeaders getHeaders() {
//                    return httpInputMessage.getHeaders();
//                }
//
//                @Override
//                public InputStream getBody() {
//                    return IOUtils.toInputStream(params);
//                }
//            };
//        } catch (IOException e) {
//            log.error("RequestBodyAdvice获取InputStream失败");
//        }
//        return httpInputMessage;
//    }
//
//    @Override
//    public Object afterBodyRead(Object o, HttpInputMessage httpInputMessage, MethodParameter methodParameter, Type type, Class<? extends HttpMessageConverter<?>> aClass) {
//        return o;
//    }
//
//    @Override
//    public Object handleEmptyBody(Object o, HttpInputMessage httpInputMessage, MethodParameter methodParameter, Type type, Class<? extends HttpMessageConverter<?>> aClass) {
//        return o;
//    }
//}
